* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Hiragino Sans', sans-serif;
    color: #1a1a1a;
    background: #fff;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    z-index: 100;
}

.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #1a1a1a;
}

/* Hero */
.hero {
    max-width: 960px;
    margin: 0 auto;
    padding: 120px 24px 80px;
    display: flex;
    align-items: center;
    gap: 60px;
    min-height: 90vh;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-screenshots {
    flex: 0 0 auto;
    display: flex;
    gap: 16px;
    align-items: center;
}

.screenshot {
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.screenshot.main {
    width: 220px;
}

.screenshot.side {
    width: 180px;
    opacity: 0.85;
    transform: translateY(30px);
}

.app-store-badge img {
    height: 50px;
    transition: opacity 0.2s;
}

.app-store-badge:hover img {
    opacity: 0.8;
}

/* Features */
.features {
    max-width: 960px;
    margin: 0 auto;
    padding: 80px 24px;
}

.features h2 {
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 48px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature {
    text-align: center;
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.feature h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* CTA */
.cta {
    text-align: center;
    padding: 80px 24px;
    background: #fafafa;
}

.cta p {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 24px;
    color: #333;
}

/* Page content (support, privacy) */
.page-content {
    max-width: 680px;
    margin: 0 auto;
    padding: 100px 24px 80px;
}

.page-content h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.last-updated {
    color: #999;
    font-size: 14px;
    margin-bottom: 40px;
}

.page-content h2 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 12px;
}

.page-content p {
    font-size: 15px;
    color: #444;
    margin-bottom: 12px;
}

.page-content ul {
    padding-left: 20px;
    margin-bottom: 12px;
}

.page-content li {
    font-size: 15px;
    color: #444;
    margin-bottom: 6px;
}

.page-content a {
    color: #0066cc;
    text-decoration: none;
}

.page-content a:hover {
    text-decoration: underline;
}

/* FAQ */
.faq {
    margin-bottom: 24px;
    padding: 20px;
    background: #fafafa;
    border-radius: 12px;
}

.faq h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.faq p {
    font-size: 14px;
    color: #555;
}

.citation {
    padding: 12px 16px;
    background: #f0f0f0;
    border-radius: 8px;
    font-size: 13px !important;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 24px;
    border-top: 1px solid #eee;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 12px;
}

.footer-links a {
    color: #666;
    text-decoration: none;
    font-size: 13px;
}

.footer-links a:hover {
    color: #1a1a1a;
}

footer p {
    color: #999;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        padding-top: 100px;
        min-height: auto;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .hero-screenshots {
        justify-content: center;
    }

    .screenshot.main {
        width: 180px;
    }

    .screenshot.side {
        width: 150px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}